@ehehejhuhe I'm so sorry but this is the Opera GX Forum. The ultraviolet, hackerman, GX classic and other themes are only available for the Opera GX browser. I see that you're using the normal Opera browser.

You can download the Real Opera GX browser by going to https://www.opera.com/gx

TL;DR: You are using the normal Opera browser. You didn't install Opera GX. Download it at https://www.opera.com/gx

Which search bar? If you're talking about the Google search bar in the Start page ( as highlighted in the image in this message ) then you might have somehow disabled it in the settings or something.

@ehehejhuhe Aren't they just right here in the settings.